expalin with functions, futures and name of the heat exhangers spares.
heat exchange is hot to cold. heat transfer types radiant convection conduction Basically everything is a heat exchanger.
Lets say there is an aluminum block. One half of the block, s1, is heated, while the other half, s2, is being cooled by a fan. The block will eventually reach an equilibrium where half of s1 will equal half of s2 in temperature.
Basically there are many ways to classify heat exchanger like- Type of contact- Direct and Indirect Type of Flow- Parallel, Counter and Cross Flow Regenerative type- small machine Recuperator type- Radiator
A typical heat exchanger is the shell and tube heat exchanger which consists of a series of finned tubes, through which one of the fluids runs. The second fluid runs over the finned tubes to be heated or cooled. Another type of heat exchanger is the plate heat exchanger. It directs flow through baffles so that the fluids are separated by plates with very large surface area. This plate type arrangement can be more efficient than the shell and tube. Advances in gasket technology have made the plate type increasingly practical. A third type of heat exchanger is the regenerative heat exchanger. In this, the heat from a process is used to warm the fluids to be used in the process, and the same type of fluid is used either side of the heat exchanger. (These heat exchangers can be either plate and frame or shell and tube construction.) A fourth type of heat exchanger uses an intermediate fluid or solid store to hold heat, which is then moved to the other side of the heat exchanger to be released. Two examples of this are adiabatic wheels, which consist of a large wheel with fine threads rotating through the hot and cold fluids, and heat exchangers with a gas passing upwards through a shower of fluid (often water) and the water then taken elsewhere before being cooled. This is commonly used for cooling gases whilst also removing certain impurities, solving two problems at once.
